Telefonaktiebolaget Lm Ericsson (publ)

Sven Steinacker

Volker Kleinfeld

Gerasimos Dimitriadis

The invention relates to a method, by a diameter routing unit (), to route diameter commands of a data packet session using a diameter protocol in a mobile communications network, the diameter routing unit comprising a storage unit () storing information which policy and charging control unit is handling which data packet session and storing information about a presence of at least one additional diameter routing unit () which routes diameter commands of the diameter protocol to the same pool of policy and charging control units () as the diameter routing unit. The method comprises the steps of receiving a diameter command for a data packet session; checking whether information is present in the storage unit () which policy and charging control unit is handling the session to which the received diameter command belongs, wherein, if information is present in the storage unit (), the received diameter command is forwarded to one of the policy and charging control units () in accordance with the stored information, wherein, if no information can be found in the storage unit () for the received diameter command, the diameter command is forwarded to the at least one additional diameter routing unit.

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Aachen, Germany

Sven Steinacker